HYB25D256800CE Datasheet, PDF (3/39 Pages) Qimonda AG – 256-Mbit Double-Data-Rate SDRAM

Internet Data Sheet
1
Overview
HY[B/I]25D256[16/40/80]0C[E/C/F/T](L)
256 Mbit Double-Data-Rate SDRAM
This chapter lists all main features of the product family HY[B/I]25D256[16/40/80]0C[E/C/F/T](L) and the ordering information.
1.1
Features
• Double data rate architecture: two data transfers per clock
cycle
• Bidirectional data strobe (DQS) is transmitted and
received with data, to be used in capturing data at the
receiver
• DQS is edge-aligned with data for reads and is center-
aligned with data for writes
• Differential clock inputs (CK and CK)
• Four internal banks for concurrent operation
• Data mask (DM) for write data
• DLL aligns DQ and DQS transitions with CK transitions
• Commands entered on each positive CK edge; data and
data mask referenced to both edges of DQS
• Burst Lengths: 2, 4, or 8
• CAS Latency: 1.5 (DDR200 only), 2, 2.5, 3
• Auto Precharge option for each burst access
• Auto Refresh and Self Refresh Modes
• RAS-lockout supported t_RAP = t_RCD
• 7.8 µs Maximum Average Periodic Refresh Interval
• 2.5 V (SSTL_2 compatible) I/O
• V_DDQ = 2.5 V ± 0.2 V (DDR200, DDR266, DDR333);
V_DDQ = 2.6 V ± 0.1 V (DDR400)
• V_DD = 2.5 V ± 0.2 V (DDR200, DDR266, DDR333);
V_DD = 2.6 V ± 0.1 V (DDR400)
• Standard Temperature Range (0 °C - +70 °C) or Industrial
Temperature Range (–40 °C - +85 °C)
• P-TFBGA-60-12 package with 3 depopulated rows
(8 × 12 mm²)
• P-TSOPII-66 package
• RoHS¹⁾ compliant product types available (green product)
Product Type Speed Code
Speed Grade
Max. Clock
Frequency
Component
@CL3
@CL2.5
@CL2
f_CK3
f_CK2.5
f_CK2
–5
DDR400B
200
166
133
–6
DDR333B
166
166
133
TABLE 1
Performance of –5, –6 and –7
–7
Unit
DDR266A
—
143
133
—
MHz
MHz
MHz
1) RoHS Compliant Product: Restriction of the use of certain hazardous substances (RoHS) in electrical and electronic equipment as defined
in the directive 2002/95/EC issued by the European Parliament and of the Council of 27 January 2003. These substances include mercury,
lead, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated biphenyl ethers.
Rev. 2.3, 2007-03
3
03062006-8CCM-VPUW